Sight-feed lubricator.



Patented July 19, 1910.

f77 Z110/711 o7 C 4 m a? F. L.' SWANBERG.

SIGHT FEED LUBRIGATOR.

APPLICATION HLBD MAR. 7, 190s.

1HE NaRRls FEERs co., wAsNlNcTvN, lz1 c.

n 'ar ai FLOYD L. SWANBERG, OF CINCINNATI, OHIO, ASSIGNOR T0 THE D. T. WILLIAMS VALVE COMPANY, 0F CINCINNATI, OHIO, A CORPORATION 0F OI-IIO.

SIGHT-FEED LUBRICATOR.

To all whom it may concern:

Be it known that I, FLOYD L. SWANBERG, a citizen of the United States, residing in Cincinnati, county of Hamilton, and State of Ohio, have invented certain new and useful Improvements in Sight-Feed Lubricators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to what is known as sight feed lubricators, in which the oil for lubrication is contained in a suitable reservoir, and is fed by gravity in regulated quantities through a sight feed chamber to the parts to be lubricated.

The invention consists in that certain novel construction and arrangement of parts to be hereinafter particularly pointed out and claimed.

In the drawings Figure 1 is a central vertical seetion partly in elevation of my improved lubricator, with the feed valve closed. Fig. 2 is a similar vert-ical section with the feed valve open.

The reservoir for the reception of the oil,

consists of the cylindrical glass casing l, with iianged base plate 2, and top cover 3, between which plate and cover the cylinder is held, washers 4 4 being provided for a tight oint.

5 is an opening drilled in top cover 3, and closed by the sliding plate (i, and through this opening the oil is filled into the reservoir.

The base plate and cover for the glass cylinder are identical in contruction, except for the oil supply opening, which is drilled after the plates are constructed. It results from this that a large number of flanged plates can be cast at a time, and as it frequently happens that some of the plates are not as smooth or finely finished as others, in selecting plates for the top cover, the perfectly finished samples can be used, leaving any rougher finished castings for the base plates. Heretofore it has not been usual to provide exactly similar plates for the top and bottom of the reservoir, so that with the older constructions it frequently happens that the top covers have to be discarded on account of the finish, while with my construction there is no such loss as such plates can be used for the base plates.

Central openings are drilled in the base Specification of Letters Patent.

Application filed March 7, 1998.

Patented July 19, 1910. Serial No. 419,731.

and top cover, and through these openings projects the hollow stem 7. This stem is provided with the flange 8, to form a suitable support for the base plate, and a washer 9, is interposed between the flange and plate to prevent leakage. The base of the stein 7, is provided with a central bore 10, for the passage of the oil, and the lower portion of the stem is screw threaded eXteriorly for the reception of the sight feed casing 11, provided with sight openings 12, within which casing is mounted the glass cylinder 18, held between the base of the stem, and a shoulder on the casing with suitable gaskets to prevent leakage. The lower end of the sight feed casing is screw threaded at 14., for securing saine on the mechanism to be lubricated. The hollow stem 7, projects upward through both the base and top plate, and is threaded eXteriorly above the cover plate for the reception of the locking nut 15, by means of which the base and cover plate and the glass cylinder 1, are held securely together.

1G is the needle valve which is seated in the base of the hollow stem for regulating the flow of the oil, which enters the valve chamber through the openings 17h-17, in the hollow stem at the bottom of the reservoir, and thence the oil passes through the passageway 10, whence it drops from the nozzle 1S, on the lower end of the stem, past the sight windows l2.

The upper end of the hollow stem 7 is screw threaded-interiorly for the reception of the threaded hollow sleeve 19, and 2O is the stem of the needle valve 1G, which passes up through the hollow stem 7, and the hollow sleeve 19. A shoulder 21, is formed on the valve rod 20, and a coiled spring' 22, is mounted on the rod, bearing between the shoulder 2l, and the lower end of the hollow sleeve 19, to hold the needle valve to its seat. The hollow sleeve 19, is provided with an adjusting nut 23, screwed on the upper end of the sleeve, so that the sleeve can be advanced in the hollow stem with relation to the valve rod 20.

Mounted on the upper end of the valve rod 20, which extends beyond the hollow sleeve and adjusting nut, is a hand lever 24, bifurcated below and pivoted to the valve stein by the pin 25. The lower ends of the bifurcated lever bear on the lianged collar- 2G, mounted loosely on the valve rod, and the pivot point of the lever is so located that when the lever is raised into vertical position, the valve will be raised from its seat, and when the lever is turned into horizontal position, the coiled spring 22, will close the valve. It will be understood from this description that by adjusting the position of the sleeve 19, the lift of the valve rod and valve will be adjusted to determine the amount of oil passing the needle valve. In order to prevent the lever 24, from rattling, I form a second shoulder 27, on the valve stem, and mount a coiled spring 2S, between this shoulder and the lower end of the flanged collar 26, so that the {langed collar in all positions of the lever will maintain sufficient pressure thereon to prevent rattling. To prevent vibrations from altering the valve adjustment, a spring arm 29 is secured to the adjusting nut 23, which arm is bent down to engage the lrnurled surface of the locking nut 15.

rlhe slide cover 6, is mounted loosely on the lower end of the locking nut, to permit the ready opening of the oil reservoir for filling through the opening 5. An air opening 30, is provided for this slide cover and the slide is bent slightly lengthwise so as to be held by the pressure of the locking nut in any position it may be placed, and so that it will not jar open under vibration. The

hollow stem 7, is also provided with an air opening 31, to prevent any back pressure in operating the valve.

Having thus described my invention, what I claim as new and desire t0 secure by Letters Patent, is:

In a lubricator, the combination of a hollow stem, a valve rod slidable therein, a valve having its seat in the lower end of said hollow stem, a hollow sleeve secured within said hollow stem at the upper end, an adjusting nut to advance said sleeve, said valve rod extending through said hollow sleeve and nut, there being a shoulder on the valve rod, a coiled spring bearing between said shoulder and the lower end of the hollow sleeve, a lever pivoted on the upper end of said valve rod to raise the valve rod against the pressure of said coiled spring, a Banged collar loosely mounted on the upper end of said valve rod and interposed between said adjusting nut and the lever and upon which the lever bears, and a coiled spring bearing between said rod and flanged collar to keep the latter in constant engagement with said lever.

FLOYD L. SVANBERG.

TWitnesses FRANK H. KIMBEL, Bassin BEALL. 

